Xantech 789-44 Manual

Xantech Splitter 789-44

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Side 1/3
1
Modules & Connecting Blocks
INSTALLATION INSTRUCTIONS
12VDC
+12
VDC
GND
STATUS
IR IN
EMIT TERS
789-44
CONNECTING BLOCK
®
IR
RCVR
Fig. 1 Model 789-44 Connecting Block
The Model 789-44 provides a quick low cost means of connecting
Xantech IR receivers and keypads to four single or four dual
emitters, with a power supply, in an infrared repeater system. It
can also provide emitter expansion for various Xantech devices,
such as the 590, 710, 792-10, 795-20, 796-20, etc.. The STATUS
terminal provides a convenient tie point for voltage to drive the
STATUS indicator on certain Xantech products, such as the 780-
80 IR Receiver (refer to Fig. 3).
SPECIFICATIONS
• Inputs: 1 - Screw type 4-terminal plug-in. 1 - IR Receiver "IR RCVR" 3.5mm stereo mini jack. (See Caution
Note, Fig. 4)
• Outputs: 4 - Emitter ports (3.5mm mono mini jacks) parallel driven.
• Contains a 470 Ohm resistor in series with each emitter output.
• Xantech 282, 283, 284 & 286 Mini Emitters may be used.
• Power requirements: 12 volts DC. Uses 781RG or 782-00 Power Supplies. A power supply Note: is not
connected to the 789-44 when it is used as an emitter expander.
• 2.1 mm coaxial power jack.
• Dimensions: 2-15/16" W x 1-3/4" D x 13/16" H
INSTALLATION
Fig. 2, illustrates a typical installation using the 789-44 in an IR repeater system. A variety of Xantech IR
receivers and a keypad are shown. When configuring a system, please keep the following items in mind:
1. More IR receivers may be wired in parallel, in the same manner as shown, up to a maximum of twelve.
More than twelve is not recommended since IR noise picked up by the many IR receivers may cause
erratic operation and reduce remote control range.
Note: This restriction does not apply to Xantech SmartPad keypads. These may be added virtually
without limit, provided power supply requirements are taken into consideration. See item 3.
2. Be sure to connect the +12V, IR OUT and GND of each IR Receiver and keypad to the respective
+12VDC GND, IR IN and of the connecting block as shown.
3. Xantech SmartPads may be used by themselves or together with IR receivers as shown. When you
do this however, the higher current requirements of the keypads must be taken into consideration as
follows:
a) Each 730-00 keypad draws 65 mA. A SmartPad2 or 3 draws 85ma.
b) Each IR receiver draws 10 to 20 mA (check specs. on actual model).
c) The max. current for proper operation from the 781RG Power Supply is 200 mA.
d) The max. current from the 782-00 Power Supply is 1000 mA.
e) When using combinations of keypads and receivers, do not exceed the max. current of the
power supplies as noted above.
789-44
CONNECTING BLOCK
2789-44
Fig. 2 A Typical 789-44 System
3. (Cont'd)
• For example, 2 keypads and several IR receivers could be used with one 781RG Power Supply and
12 keypads and 8 (or more) receivers could be used with one 782-00 Power Supply.
NOTE: To avoid current "hogging", never connect regulated power supplies, such as the 781RG or
the 782-00, in parallel!
• CAUTION: Do not use unregulated 12V power supply adapters from other manufacturers. These
may deliver excessive voltage to the IR receivers and cause them to “latch-up”. When this occurs,
the “talkback” LEDs and 283 Blink IR's (if used) will stay on continuously!
4. For clarity, connections in Fig. 2 are shown going to a 3-conductor bus in a "daisy chain" fashion. In
an actual installation, however, it is recommended that 4-conductor "home-runs" be pulled from each
room to the 789-44 Connecting Block in the main room. The home-runs maintain higher power supply
voltage to each IR receiver and keypad, and the extra 4th wire can be used for "STATUS" if desired
(refer to Fig. 3).
5. The "IR RCVR" jack on the 789-44 allows the 490-30 (and other Xantech IR Receivers with a cable
having a 3.5 mm stereo mini plug) to be plugged directly into the 789-44. You can do this when the
789-44 Connecting Block is within reach of the 7-foot cable, such as when installing the 490-30 in a
cabinet where the controlled equipment is behind closed doors.
CAUTION: Plug only Xantech IR Receivers equipped with a stereo mini plug into the IR RCVR
jack. Do not plug in emitters or other devices; it will destroy emitter & damage power supplies!
6. The emitter ports are driven in parallel with a 470 Ohm resistor connected in series with each port. The
resistors ensure proper current sharing to each emitter. When using less than 4 emitters, you may plug
them into any of the 4 emitter ports without regard to order.
7. Because of this current sharing feature, you may plug in any combination of the 282, 283, 284 & 286
series of emitters (up to a maximum of 8 individual emitters) to drive the desired number of devices.
NOTE: Be sure the 781RG Power Supply is plugged into an un-switched AC outlet. This maintains the
system in "standby" operation so that power-on commands can be sent to the controlled equipment.
OUT
V
IR
RCVR
PWR
G S
789-44
Connecting Block
Satellite Receiver
AV Receiver
VCR
MAIN ROOM, EQUIPMENT CABINET, ETC.
To 120 V AC
(unswitched; see
NOTE, item 7)
781RG
Power
Supply
282M
Emitter
283M
Blink IR™
7 Foot 3-Conductor
Cable with Quick
Connect Stereo Mini Plug
490-30
Series
Micro Link™
IR Receivers
291-10
Hidden Link™
IR Receiver
GND
IR OUT
+12V
ROOM 3
780-10
J-Box
IR Receiver
490-00
Series
Micro Link™
IR Receivers
3-Wire
Cable
IR OUT
GND
+12V
480-00
Dinky Link™
IR Receiver
Red
Stripe
Smart
Pad™
GND
IR OUT
+12V
ROOM 2
ROOM 1 ROOM 4
GND
IR OUT
+12V
286M
Dual Blink IR™
(to other
controlled
devices)
3-Wire
Cable
IR OUT
GND
+12V
Red
Stripe
+12V
IR O UT
GND
780-10
J-BOX RECEIVER
XANTECH C ORPORATION
SYLMAR, CA 91342
CAUTION:
See text, item 5.
7 Foot Quick
Connect Cable
CB12
Connecting
Block
12VDC
+12 VDC
GND
STATUS
IR IN
EM IT T ER S
IR
RCVR
789-44
CONNECTING BLOCK
®
282M
Emitter

Produkt Specifikationer

Mærke: Xantech
Kategori: Splitter
Model: 789-44

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